6-3q=21

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Solution for 6-3q=21 equation: 


Simplifying
6 + -3q = 21

Solving
6 + -3q = 21

Solving for variable 'q'.

Move all terms containing q to the left, all other terms to the right.

Add '-6' to each side of the equation.
6 + -6 + -3q = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -3q = 21 + -6
-3q = 21 + -6

Combine like terms: 21 + -6 = 15
-3q = 15

Divide each side by '-3'.
q = -5

Simplifying
q = -5

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